Stock Based Compensation - Stock Option Plans By Exercise Price Range (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options (in shares)	3.3
Average remaining life	4 years 10 months 24 days
Number of options (in shares)	2.4
Aggregate intrinsic value of stock options exercised	$ 1.0	$ 5.4	$ 9.6
Cash receipts from stock options exercised	1.8	7.4	9.4
Proceeds from stock option exercises	$ 2.5	7.5	$ 1.6
Net Parent Investment
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from stock option exercises		$ 7.6
$12.19 - $17.43
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, minimum (in dollars per share)	$ 12.19
Exercise price range, maximum (in dollars per share)	$ 17.43
Number of options (in shares)	0.5
Average exercise price (in dollars per share)	$ 16.39
Average remaining life	2 years 2 months 12 days
Number of options (in shares)	0.5
Average exercise price (in dollars per share)	$ 16.39
$17.44 - $23.46
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, minimum (in dollars per share)	17.44
Exercise price range, maximum (in dollars per share)	$ 23.46
Number of options (in shares)	0.4
Average exercise price (in dollars per share)	$ 21.64
Average remaining life	3 years 10 months 24 days
Number of options (in shares)	0.4
Average exercise price (in dollars per share)	$ 21.58
$23.47 - $29.34
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, minimum (in dollars per share)	23.47
Exercise price range, maximum (in dollars per share)	$ 29.34
Number of options (in shares)	0.2
Average exercise price (in dollars per share)	$ 28.87
Average remaining life	6 years 3 months 18 days
Number of options (in shares)	0.1
Average exercise price (in dollars per share)	$ 28.73
$29.35 - $31.46
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, minimum (in dollars per share)	29.35
Exercise price range, maximum (in dollars per share)	$ 31.46
Number of options (in shares)	1.7
Average exercise price (in dollars per share)	$ 31.35
Average remaining life	5 years 4 months 24 days
Number of options (in shares)	1.1
Average exercise price (in dollars per share)	$ 31.33
$31.47 - $33.66
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, minimum (in dollars per share)	31.47
Exercise price range, maximum (in dollars per share)	$ 33.66
Number of options (in shares)	0.5
Average exercise price (in dollars per share)	$ 33.40
Average remaining life	6 years 2 months 12 days
Number of options (in shares)	0.3
Average exercise price (in dollars per share)	$ 33.43